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J. DOETSOH. DELIVERY APPARATUS FOR PRINTING PRESSES. No. 309,034. Patented "Dec. 9, 1884.

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DELIVERY APPARATUS FOR PRINTING PRESSES. No. 309,084. Patented Dec. 9, 1884.

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L. J. DOETSGH, DELIVERY APPARATUS FOR PRINTING PRESSES., No. 809,034. Patented Dec. 9, 1884.

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L. J. DOETSGH.

DELIVERY APPARATUS FOR PRINTING PRESISES.

No. 309,034. Patented Dec. 9, 18:84.

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LOUIS J. DOETSOH, OF BALTIMORE, MARYLAND.

flELlVERY APPARATUS FOR PRINTlNG-PRESSE.

EPEC'IPICATIONL, forming part of Letters Patent No. 809,034:, dated December 9, 1834:.

Application filed December 20, 1883.

To all whom, it may concern:

Be it known that I, LOUIS J. DOETSCI-I, of the city of Baltimore, and State of Maryland, have invented certain Improvements in Delivery Apparatus for Printing-Presses, of which the following is a specification.

This invention relates to certain improvements in printing-presses, and particularly those employed in lithographic printing.

In the accompanying drawings, forming a part hereof, Figure I is a side elevation of a portion of a printingpress to which my improvements are applied. Fig. Ilisasectional view of the same, taken on dotted 11110.2 2, Fig. I. Figs. III to X, inclusive, are details of the press on an enlarged scale.

A is the stand of the press, and I3 a frame which supports the table 0, from which the sheets to be printed are fed.

D is the printing or pressure cylinder, hung in bearings a in the stand A. The lithographic stone is denoted in Fig. II by b.

E is a shaft, which in the operation of the press is in constant revolution by means of gearing. (Not shown.)

F is a cam fastened to shaft E, and G a lever pivoted at 0, having a toothed sector, (I, at its upper end. This toothed sector is in gear with a pinion, c, which is secured to the shaft f.

H H are chain-heads keyed to the shaft f and connected to other similar heads, I, on a shaft, by means of endless'chains K. The lower end of the lever G has a roller, h,which is held in contact with the cam F by means of a spring, In the revolution of the cam F the pinion e is rotated alternately in a forward and backward direction through the medium of the lever G and its toothed sector (I, and the chains K are thereby given a similar movement, as indicated by the arrows in Fig. I. The chains have a spring gripper, K, into which the edge of the newly-printed sheet (represented by a dotted line marked a. in Fig. I) as it passes around the cylinder D is de livered. The gripper K when not in contact with the opening devices, hereinafter dc scribed, remains closed, with its lower member, 70, fastened to a bar, m, connecting the (See Figs. I, III, and VI.) A

chains K.

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shaft, Z, extending loosely through the links Z of the chains K, is rigidly secured to themember 7G of the gripper K, and extends loosely through the other member, 7.1', consequently a partial revolution of the said shaft in the direction of the arrow, Fig. V, opens the said gripper. The opening of the gripper K, when the same is at its lowest point and in a position ready to receive the printed sheet, is primarily effected by means of the prongs m, fastened at the end of the shaft Z, which come in contact with a triangular plate, a, fastened to a bracket forming a part of the frame I3. (See Figs. I and IV.) The prongs are also shown in Figs. II and III, and in the latter figure on an enlarged scale and in an elevated position, as the gripper is there shown as near to its highest point. The opening of the gripper when the same is elevated, and at such time as it is necessary for the sheet to be released, so that the fly I? may carry the sheet to a place of deposit, is effected by the prongs m striking against a pin, 0, which is fastened in a bracket, '0, pendent from the upper part of the frame B. (See Figs. I, II, and III.)

L is a second cam on the shaft E, and M is a lever pivoted at 1), having a roller, q, at its lower end, (see Fig. I,) and a toothed sector, N, at its upper end. This sector is in gear with a smaller sector, 0, on a shaft, 9, which shaft also carries the fly I, which consists of two arms, 8, united by revoluble bars 2?, carrying rollersu, connected by tapes 1). (See Figs. I, II, VIII, IX, and X.) The upperrevoluble bar, t, has a pulley, 10, preferably of indiarubber,which, as the fly is thrown away from the impression-cylinder by the action of the lever M, is brought in contact with a revolving friction-wheel, Q, (see Figs. IX and X,) attached to pulley It on a stud, It, projecting from the frame I3,which receives its movement through the medium of a belt, S, from the pulley S, the shaft 0: of which has a pinion, q in gear with the reciprocating rack T, which operates the inking-rollers. (Not shown.)

The friction-wheel Q and the pulley R are not shown in Fig. I, as their illustration would tend to complicatcthe lines.

From the foregoing description it will be understood that the newly-printed sheet, after IOC the newly-printed sheet as it leaves the said 1 cylinder toward the under side of the feedboard, and a vibratory pendentfly situated above the gripping mechanism and below the feed-board, adapted in its vibratory movement away from the said cylinder to strike the un- 20 printed side of the said sheet as it is released from the gripping mechanism and deposit it face up on a table, substantially as specified.

LOUIS J. DOETSOH.

WVitnesses:

WM. T. HOWARD, OHAs. B. CASSADY. 

